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How can I quantify difference between two images?
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General idea
Option 1: Load both images as arrays (scipy.misc.imread) and calculate an element-wise (pixel-by-pixel) difference. Calculate the norm of the difference.
Option 2: Load both images. Calculate some feature vector for each of them (l...
How to get root access on Android emulator?
I have All Android SDK versions(from 1.5 to 2.3.3), and I tried many methods for getting root in Android emulator. I don't use any Android device and test everything on emulator(AVD).
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Purpose of Python's __repr__
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193
__repr__ should return a printable representation of the object, most likely one of the ways p...
Pointers in C: when to use the ampersand and the asterisk?
...rst element
To get the second element:
int a[2]; // array
int i = *(a + 1); // the value of the second element
int i2 = a[1]; // the value of the second element
So the [] indexing operator is a special form of the * operator, and it works like this:
a[i] == *(a + i); // these two statements a...
Read environment variables in Node.js
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1914
process.env.ENV_VARIABLE
Where ENV_VARIABLE is the name of the variable you wish to access....
How do I byte-compile everything in my .emacs.d directory?
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213
C-u 0 M-x byte-recompile-directory
will compile all the .el files in the directory and in all ...
Where is shared_ptr?
...clude the headers for shared_ptr (and working). Simply stating std , tr1 and <memory> is not helping at all! I have downloaded boosts and all but still it doesn't show up! Can someone help me by telling exactly where to find it?
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Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?
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199
If you use prepareForSegue:sender:then you won't have as much to change if you later decide to...
What is the difference between the | and || or operators?
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How do I view the full content of a text or varchar(MAX) column in SQL Server 2008 Management Studio
In this live SQL Server 2008 (build 10.0.1600) database, there's an Events table, which contains a text column named Details . (Yes, I realize this should actually be a varchar(MAX) column, but whoever set this database up did not do it that way.)
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